Is there a google sketchup mode?
There is no one click button to make blender act just like sketchup, but most of what you want can be done.

To turn on grid snapping press Shift Tab.

By "Selectable surfaces" I think you would want to select a face. So in edit mode (Tab to toggle in and out of edit mode) press Ctrl Tab > Face.

All keyboard shortcuts and mouse actions can be changed through the user preferences. File > User Preferences or Ctrl Alt U then the Input tab.